/* 
 * StikiWeb Wiki - a Wiki for Hierarchical Organizations
 * $Id: LoginAction.java,v 1.4 2004/05/05 05:23:43 biglee Exp $
 * 
 * ***** BEGIN LICENSE BLOCK *****
 * Version: MPL 1.1
 *
 * The contents of this file are subject to the Mozilla Public License Version
 * 1.1 (the "License"); you may not use this file except in compliance with
 * the License. You may obtain a copy of the License at
 * http://www.mozilla.org/MPL/
 *
 * Software distributed under the License is distributed on an "AS IS" basis,
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
 * for the specific language governing rights and limitations under the
 * License.
 *
 * The Original Code is the StikiWeb Wiki 
 *
 * The Initial Developer of the Original Code is Lee Haslup (biglee@haslups.com).
 * Portions created by the Initial Developer are Copyright (C) 2004
 * the Initial Developer. All Rights Reserved.
 *
 * Contributor(s):
 *
 * ***** END LICENSE BLOCK ***** 
 */
package org.stikiweb.struts;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

import org.apache.struts.action.ActionError;
import org.apache.struts.action.ActionErrors;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;
import org.apache.struts.validator.DynaValidatorForm;

import org.stikiweb.contentMagnager.PermissionManager;

/**
 * @author Allen L (BigLee) Haslup
 *
 */
public class LoginAction extends StikiAction {

	public ActionForward execute(
											ActionMapping mapping, 
											ActionForm form, 
											HttpServletRequest req, 
											HttpServletResponse resp) 
	{
		// make sure our state is set up and good to go.
		setup(req);
		
		// find the user's input.  If there is none, go get it.
		DynaValidatorForm loginBean = (DynaValidatorForm)form;
		if(form==null) {
			return new ActionForward(mapping.getInput());
		}
		
		// fetch the users responses.
		String username = (String)loginBean.get("username");
		String password = (String)loginBean.get("password");
		String guestname = (String)loginBean.get("guestname");
		
		if((username==null || username.equals("")) && (password==null || password.equals(""))) {
			return new ActionForward(mapping.getInput());
		}
		
		if(guestname==null) {
			guestname="";
		}
		
		// check the password
		if(PermissionManager.solo().checkPassword(username,password)) {
			if(username.equalsIgnoreCase("Guest") && guestname.length()<2) {
				ActionErrors errors = new ActionErrors();
				errors.add(ActionErrors.GLOBAL_MESSAGE,new ActionError("error.login.guestfail"));
				saveErrors(req,errors);
				return new ActionForward(mapping.getInput());
			}
			HttpSession session = req.getSession();
			session.setAttribute("username",username);
			if(guestname!=null && guestname.length()>0) {
				session.setAttribute("guestname",guestname);
			}
			else {
				session.removeAttribute("guestname");
			}
			String pendingAction = (String)session.getAttribute("pendingAction");
			session.removeAttribute("pendingAction");
			String pendingPage = (String)session.getAttribute("pendingPage");
			session.removeAttribute("pendingPage");
			String currentPage = (String)session.getAttribute("currentPage");
			if("viewPage".equals(pendingAction)) {
				if(pendingPage==null) {
					pendingPage = "Main";
				}
				return new ActionForward("/viewPage.do?name="+pendingPage);
			}
			else if("editPage".equals(pendingAction)) {
				String pendingOp = (String)session.getAttribute("pendingOp");
				session.removeAttribute("pendingOp");
				if(pendingPage==null) {
					return mapping.findForward("main");
				}
				if(pendingOp==null) {
					pendingOp="EDIT";
				}
				return new ActionForward("/editPage.do?name="+pendingPage+"&operation="+pendingOp);
			}
			else if("createPage".equals(pendingAction)) {
				if(pendingPage==null) {
					return mapping.findForward("main");
				}
				return new ActionForward("/createPage.do?name="+pendingPage);
			}
			else if("adminPage".equals(pendingAction)) {
				if(pendingPage==null) {
					return mapping.findForward("main");
				}
				return new ActionForward("/adminPage.do?name="+pendingPage);
			}
			else if("viewAttachment".equals(pendingAction)) {
				if(pendingPage==null) {
					return mapping.findForward("main");
				}
				return new ActionForward("/viewAttachment.do?name="+pendingPage);
			}
			else if("attach".equals(pendingAction)) {
				return new ActionForward("/attach.do?name="+pendingPage);
			}
			else if(currentPage!=null && PermissionManager.solo().userPermLevelForPage(username,currentPage)>=PermissionManager.READ) {
				return new ActionForward("/viewPage.do?name="+currentPage);
			}
			return mapping.findForward("main");
		}
		else {
			ActionErrors errors = new ActionErrors();
			errors.add(ActionErrors.GLOBAL_MESSAGE,new ActionError("error.login.failure"));
			saveErrors(req,errors);
			return new ActionForward(mapping.getInput());
		}
	}

}
